1    /INTERVAL

       /INTERVAL:n

    Specifies the sampling interval in milliseconds. The value of n
    must be at least 10 milliseconds and at most 60,000 milliseconds.
    Because the granularity of the system clock is 10 milliseconds,
    you should use a multiple of 10. The default sampling interval is
    10 milliseconds; therefore, you can use the /INTERVAL:n qualifier
    only to specify a slower sampling rate.

2    /STACK_PCS

    Specifies that stack PC values are collected for PC sampling
    data. This is the default upon entry into the Collector.

3    /NOSTACK_PCS

    Specifies that no stack PC values are collected for PC sampling
    data.